1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/plugins/base/nsPluginsDirUnix.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,421 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "nsNPAPIPlugin.h"
1.10 +#include "nsNPAPIPluginInstance.h"
1.11 +#include "nsIMemory.h"
1.12 +#include "nsPluginsDir.h"
1.13 +#include "nsPluginsDirUtils.h"
1.14 +#include "prmem.h"
1.15 +#include "prenv.h"
1.16 +#include "prerror.h"
1.17 +#include "prio.h"
1.18 +#include <sys/stat.h>
1.19 +#include "nsString.h"
1.20 +#include "nsIFile.h"
1.21 +#include "nsIPrefBranch.h"
1.22 +#include "nsIPrefService.h"
1.23 +
1.24 +#define LOCAL_PLUGIN_DLL_SUFFIX ".so"
1.25 +#if defined(__hpux)
1.26 +#define DEFAULT_X11_PATH "/usr/lib/X11R6/"
1.27 +#undef LOCAL_PLUGIN_DLL_SUFFIX
1.28 +#define LOCAL_PLUGIN_DLL_SUFFIX ".sl"
1.29 +#define LOCAL_PLUGIN_DLL_ALT_SUFFIX ".so"
1.30 +#elif defined(_AIX)
1.31 +#define DEFAULT_X11_PATH "/usr/lib"
1.32 +#define LOCAL_PLUGIN_DLL_ALT_SUFFIX ".a"
1.33 +#elif defined(SOLARIS)
1.34 +#define DEFAULT_X11_PATH "/usr/openwin/lib/"
1.35 +#elif defined(LINUX)
1.36 +#define DEFAULT_X11_PATH "/usr/X11R6/lib/"
1.37 +#elif defined(__APPLE__)
1.38 +#define DEFAULT_X11_PATH "/usr/X11R6/lib"
1.39 +#undef LOCAL_PLUGIN_DLL_SUFFIX
1.40 +#define LOCAL_PLUGIN_DLL_SUFFIX ".dylib"
1.41 +#define LOCAL_PLUGIN_DLL_ALT_SUFFIX ".so"
1.42 +#else
1.43 +#define DEFAULT_X11_PATH ""
1.44 +#endif
1.45 +
1.46 +#if (MOZ_WIDGET_GTK == 2)
1.47 +
1.48 +#define PLUGIN_MAX_LEN_OF_TMP_ARR 512
1.49 +
1.50 +static void DisplayPR_LoadLibraryErrorMessage(const char *libName)
1.51 +{
1.52 + char errorMsg[PLUGIN_MAX_LEN_OF_TMP_ARR] = "Cannot get error from NSPR.";
1.53 + if (PR_GetErrorTextLength() < (int) sizeof(errorMsg))
1.54 + PR_GetErrorText(errorMsg);
1.55 +
1.56 + fprintf(stderr, "LoadPlugin: failed to initialize shared library %s [%s]\n",
1.57 + libName, errorMsg);
1.58 +}
1.59 +
1.60 +static void SearchForSoname(const char* name, char** soname)
1.61 +{
1.62 + if (!(name && soname))
1.63 + return;
1.64 + PRDir *fdDir = PR_OpenDir(DEFAULT_X11_PATH);
1.65 + if (!fdDir)
1.66 + return;
1.67 +
1.68 + int n = strlen(name);
1.69 + PRDirEntry *dirEntry;
1.70 + while ((dirEntry = PR_ReadDir(fdDir, PR_SKIP_BOTH))) {
1.71 + if (!PL_strncmp(dirEntry->name, name, n)) {
1.72 + if (dirEntry->name[n] == '.' && dirEntry->name[n+1] && !dirEntry->name[n+2]) {
1.73 + // name.N, wild guess this is what we need
1.74 + char out[PLUGIN_MAX_LEN_OF_TMP_ARR] = DEFAULT_X11_PATH;
1.75 + PL_strcat(out, dirEntry->name);
1.76 + *soname = PL_strdup(out);
1.77 + break;
1.78 + }
1.79 + }
1.80 + }
1.81 +
1.82 + PR_CloseDir(fdDir);
1.83 +}
1.84 +
1.85 +static bool LoadExtraSharedLib(const char *name, char **soname, bool tryToGetSoname)
1.86 +{
1.87 + bool ret = true;
1.88 + PRLibSpec tempSpec;
1.89 + PRLibrary *handle;
1.90 + tempSpec.type = PR_LibSpec_Pathname;
1.91 + tempSpec.value.pathname = name;
1.92 + handle = PR_LoadLibraryWithFlags(tempSpec, PR_LD_NOW|PR_LD_GLOBAL);
1.93 + if (!handle) {
1.94 + ret = false;
1.95 + DisplayPR_LoadLibraryErrorMessage(name);
1.96 + if (tryToGetSoname) {
1.97 + SearchForSoname(name, soname);
1.98 + if (*soname) {
1.99 + ret = LoadExtraSharedLib((const char *) *soname, nullptr, false);
1.100 + }
1.101 + }
1.102 + }
1.103 + return ret;
1.104 +}
1.105 +
1.106 +#define PLUGIN_MAX_NUMBER_OF_EXTRA_LIBS 32
1.107 +#define PREF_PLUGINS_SONAME "plugin.soname.list"
1.108 +#if defined(SOLARIS) || defined(HPUX)
1.109 +#define DEFAULT_EXTRA_LIBS_LIST "libXt" LOCAL_PLUGIN_DLL_SUFFIX ":libXext" LOCAL_PLUGIN_DLL_SUFFIX ":libXm" LOCAL_PLUGIN_DLL_SUFFIX
1.110 +#else
1.111 +#define DEFAULT_EXTRA_LIBS_LIST "libXt" LOCAL_PLUGIN_DLL_SUFFIX ":libXext" LOCAL_PLUGIN_DLL_SUFFIX
1.112 +#endif
1.113 +/*
1.114 + this function looks for
1.115 + user_pref("plugin.soname.list", "/usr/X11R6/lib/libXt.so.6:libXext.so");
1.116 + in user's pref.js
1.117 + and loads all libs in specified order
1.118 +*/
1.119 +
1.120 +static void LoadExtraSharedLibs()
1.121 +{
1.122 + // check out if user's prefs.js has libs name
1.123 + nsresult res;
1.124 + nsCOMPtr<nsIPrefBranch> prefs(do_GetService(NS_PREFSERVICE_CONTRACTID, &res));
1.125 + if (NS_SUCCEEDED(res) && (prefs != nullptr)) {
1.126 + char *sonameList = nullptr;
1.127 + bool prefSonameListIsSet = true;
1.128 + res = prefs->GetCharPref(PREF_PLUGINS_SONAME, &sonameList);
1.129 + if (!sonameList) {
1.130 + // pref is not set, lets use hardcoded list
1.131 + prefSonameListIsSet = false;
1.132 + sonameList = PL_strdup(DEFAULT_EXTRA_LIBS_LIST);
1.133 + }
1.134 + if (sonameList) {
1.135 + char *arrayOfLibs[PLUGIN_MAX_NUMBER_OF_EXTRA_LIBS] = {0};
1.136 + int numOfLibs = 0;
1.137 + char *nextToken;
1.138 + char *p = nsCRT::strtok(sonameList,":",&nextToken);
1.139 + if (p) {
1.140 + while (p && numOfLibs < PLUGIN_MAX_NUMBER_OF_EXTRA_LIBS) {
1.141 + arrayOfLibs[numOfLibs++] = p;
1.142 + p = nsCRT::strtok(nextToken,":",&nextToken);
1.143 + }
1.144 + } else // there is just one lib
1.145 + arrayOfLibs[numOfLibs++] = sonameList;
1.146 +
1.147 + char sonameListToSave[PLUGIN_MAX_LEN_OF_TMP_ARR] = "";
1.148 + for (int i=0; i<numOfLibs; i++) {
1.149 + // trim out head/tail white spaces (just in case)
1.150 + bool head = true;
1.151 + p = arrayOfLibs[i];
1.152 + while (*p) {
1.153 + if (*p == ' ' || *p == '\t') {
1.154 + if (head) {
1.155 + arrayOfLibs[i] = ++p;
1.156 + } else {
1.157 + *p = 0;
1.158 + }
1.159 + } else {
1.160 + head = false;
1.161 + p++;
1.162 + }
1.163 + }
1.164 + if (!arrayOfLibs[i][0]) {
1.165 + continue; // null string
1.166 + }
1.167 + bool tryToGetSoname = true;
1.168 + if (PL_strchr(arrayOfLibs[i], '/')) {
1.169 + //assuming it's real name, try to stat it
1.170 + struct stat st;
1.171 + if (stat((const char*) arrayOfLibs[i], &st)) {
1.172 + //get just a file name
1.173 + arrayOfLibs[i] = PL_strrchr(arrayOfLibs[i], '/') + 1;
1.174 + } else
1.175 + tryToGetSoname = false;
1.176 + }
1.177 + char *soname = nullptr;
1.178 + if (LoadExtraSharedLib(arrayOfLibs[i], &soname, tryToGetSoname)) {
1.179 + //construct soname's list to save in prefs
1.180 + p = soname ? soname : arrayOfLibs[i];
1.181 + int n = PLUGIN_MAX_LEN_OF_TMP_ARR -
1.182 + (strlen(sonameListToSave) + strlen(p));
1.183 + if (n > 0) {
1.184 + PL_strcat(sonameListToSave, p);
1.185 + PL_strcat(sonameListToSave,":");
1.186 + }
1.187 + if (soname) {
1.188 + PL_strfree(soname); // it's from strdup
1.189 + }
1.190 + if (numOfLibs > 1)
1.191 + arrayOfLibs[i][strlen(arrayOfLibs[i])] = ':'; //restore ":" in sonameList
1.192 + }
1.193 + }
1.194 +
1.195 + // Check whether sonameListToSave is a empty String, Bug: 329205
1.196 + if (sonameListToSave[0])
1.197 + for (p = &sonameListToSave[strlen(sonameListToSave) - 1]; *p == ':'; p--)
1.198 + *p = 0; //delete tail ":" delimiters
1.199 +
1.200 + if (!prefSonameListIsSet || PL_strcmp(sonameList, sonameListToSave)) {
1.201 + // if user specified some bogus soname I overwrite it here,
1.202 + // otherwise it'll decrease performance by calling popen() in SearchForSoname
1.203 + // every time for each bogus name
1.204 + prefs->SetCharPref(PREF_PLUGINS_SONAME, (const char *)sonameListToSave);
1.205 + }
1.206 + PL_strfree(sonameList);
1.207 + }
1.208 + }
1.209 +}
1.210 +#endif //MOZ_WIDGET_GTK2
1.211 +
1.212 +/* nsPluginsDir implementation */
1.213 +
1.214 +bool nsPluginsDir::IsPluginFile(nsIFile* file)
1.215 +{
1.216 + nsAutoCString filename;
1.217 + if (NS_FAILED(file->GetNativeLeafName(filename)))
1.218 + return false;
1.219 +
1.220 +#ifdef ANDROID
1.221 + // It appears that if you load
1.222 + // 'libstagefright_honeycomb.so' on froyo, or
1.223 + // 'libstagefright_froyo.so' on honeycomb, we will abort.
1.224 + // Since these are just helper libs, we can ignore.
1.225 + const char *cFile = filename.get();
1.226 + if (strstr(cFile, "libstagefright") != nullptr)
1.227 + return false;
1.228 +#endif
1.229 +
1.230 + NS_NAMED_LITERAL_CSTRING(dllSuffix, LOCAL_PLUGIN_DLL_SUFFIX);
1.231 + if (filename.Length() > dllSuffix.Length() &&
1.232 + StringEndsWith(filename, dllSuffix))
1.233 + return true;
1.234 +
1.235 +#ifdef LOCAL_PLUGIN_DLL_ALT_SUFFIX
1.236 + NS_NAMED_LITERAL_CSTRING(dllAltSuffix, LOCAL_PLUGIN_DLL_ALT_SUFFIX);
1.237 + if (filename.Length() > dllAltSuffix.Length() &&
1.238 + StringEndsWith(filename, dllAltSuffix))
1.239 + return true;
1.240 +#endif
1.241 + return false;
1.242 +}
1.243 +
1.244 +/* nsPluginFile implementation */
1.245 +
1.246 +nsPluginFile::nsPluginFile(nsIFile* file)
1.247 +: mPlugin(file)
1.248 +{
1.249 +}
1.250 +
1.251 +nsPluginFile::~nsPluginFile()
1.252 +{
1.253 +}
1.254 +
1.255 +nsresult nsPluginFile::LoadPlugin(PRLibrary **outLibrary)
1.256 +{
1.257 + PRLibSpec libSpec;
1.258 + libSpec.type = PR_LibSpec_Pathname;
1.259 + bool exists = false;
1.260 + mPlugin->Exists(&exists);
1.261 + if (!exists)
1.262 + return NS_ERROR_FILE_NOT_FOUND;
1.263 +
1.264 + nsresult rv;
1.265 + nsAutoCString path;
1.266 + rv = mPlugin->GetNativePath(path);
1.267 + if (NS_FAILED(rv))
1.268 + return rv;
1.269 +
1.270 + libSpec.value.pathname = path.get();
1.271 +
1.272 +#if (MOZ_WIDGET_GTK == 2)
1.273 +
1.274 + // Normally, Mozilla isn't linked against libXt and libXext
1.275 + // since it's a Gtk/Gdk application. On the other hand,
1.276 + // legacy plug-ins expect the libXt and libXext symbols
1.277 + // to already exist in the global name space. This plug-in
1.278 + // wrapper is linked against libXt and libXext, but since
1.279 + // we never call on any of these libraries, plug-ins still
1.280 + // fail to resolve Xt symbols when trying to do a dlopen
1.281 + // at runtime. Explicitly opening Xt/Xext into the global
1.282 + // namespace before attempting to load the plug-in seems to
1.283 + // work fine.
1.284 +
1.285 +
1.286 +#if defined(SOLARIS) || defined(HPUX)
1.287 + // Acrobat/libXm: Lazy resolving might cause crash later (bug 211587)
1.288 + *outLibrary = PR_LoadLibraryWithFlags(libSpec, PR_LD_NOW);
1.289 + pLibrary = *outLibrary;
1.290 +#else
1.291 + // Some dlopen() doesn't recover from a failed PR_LD_NOW (bug 223744)
1.292 + *outLibrary = PR_LoadLibraryWithFlags(libSpec, 0);
1.293 + pLibrary = *outLibrary;
1.294 +#endif
1.295 + if (!pLibrary) {
1.296 + LoadExtraSharedLibs();
1.297 + // try reload plugin once more
1.298 + *outLibrary = PR_LoadLibraryWithFlags(libSpec, 0);
1.299 + pLibrary = *outLibrary;
1.300 + if (!pLibrary) {
1.301 + DisplayPR_LoadLibraryErrorMessage(libSpec.value.pathname);
1.302 + return NS_ERROR_FAILURE;
1.303 + }
1.304 + }
1.305 +#else
1.306 + *outLibrary = PR_LoadLibraryWithFlags(libSpec, 0);
1.307 + pLibrary = *outLibrary;
1.308 +#endif // MOZ_WIDGET_GTK2
1.309 +
1.310 +#ifdef DEBUG
1.311 + printf("LoadPlugin() %s returned %lx\n",
1.312 + libSpec.value.pathname, (unsigned long)pLibrary);
1.313 +#endif
1.314 +
1.315 + if (!pLibrary) {
1.316 + return NS_ERROR_FAILURE;
1.317 + }
1.318 +
1.319 + return NS_OK;
1.320 +}
1.321 +
1.322 +nsresult nsPluginFile::GetPluginInfo(nsPluginInfo& info, PRLibrary **outLibrary)
1.323 +{
1.324 + *outLibrary = nullptr;
1.325 +
1.326 + info.fVersion = nullptr;
1.327 +
1.328 + // Sadly we have to load the library for this to work.
1.329 + nsresult rv = LoadPlugin(outLibrary);
1.330 + if (NS_FAILED(rv))
1.331 + return rv;
1.332 +
1.333 + const char* (*npGetPluginVersion)() =
1.334 + (const char* (*)()) PR_FindFunctionSymbol(pLibrary, "NP_GetPluginVersion");
1.335 + if (npGetPluginVersion) {
1.336 + info.fVersion = PL_strdup(npGetPluginVersion());
1.337 + }
1.338 +
1.339 + const char* (*npGetMIMEDescription)() =
1.340 + (const char* (*)()) PR_FindFunctionSymbol(pLibrary, "NP_GetMIMEDescription");
1.341 + if (!npGetMIMEDescription) {
1.342 + return NS_ERROR_FAILURE;
1.343 + }
1.344 +
1.345 + const char* mimedescr = npGetMIMEDescription();
1.346 + if (!mimedescr) {
1.347 + return NS_ERROR_FAILURE;
1.348 + }
1.349 +
1.350 + rv = ParsePluginMimeDescription(mimedescr, info);
1.351 + if (NS_FAILED(rv)) {
1.352 + return rv;
1.353 + }
1.354 +
1.355 + nsAutoCString path;
1.356 + if (NS_FAILED(rv = mPlugin->GetNativePath(path)))
1.357 + return rv;
1.358 + info.fFullPath = PL_strdup(path.get());
1.359 +
1.360 + nsAutoCString fileName;
1.361 + if (NS_FAILED(rv = mPlugin->GetNativeLeafName(fileName)))
1.362 + return rv;
1.363 + info.fFileName = PL_strdup(fileName.get());
1.364 +
1.365 + NP_GetValueFunc npGetValue = (NP_GetValueFunc)PR_FindFunctionSymbol(pLibrary, "NP_GetValue");
1.366 + if (!npGetValue) {
1.367 + return NS_ERROR_FAILURE;
1.368 + }
1.369 +
1.370 + const char *name = nullptr;
1.371 + npGetValue(nullptr, NPPVpluginNameString, &name);
1.372 + if (name) {
1.373 + info.fName = PL_strdup(name);
1.374 + }
1.375 + else {
1.376 + info.fName = PL_strdup(fileName.get());
1.377 + }
1.378 +
1.379 + const char *description = nullptr;
1.380 + npGetValue(nullptr, NPPVpluginDescriptionString, &description);
1.381 + if (description) {
1.382 + info.fDescription = PL_strdup(description);
1.383 + }
1.384 + else {
1.385 + info.fDescription = PL_strdup("");
1.386 + }
1.387 +
1.388 + return NS_OK;
1.389 +}
1.390 +
1.391 +nsresult nsPluginFile::FreePluginInfo(nsPluginInfo& info)
1.392 +{
1.393 + if (info.fName != nullptr)
1.394 + PL_strfree(info.fName);
1.395 +
1.396 + if (info.fDescription != nullptr)
1.397 + PL_strfree(info.fDescription);
1.398 +
1.399 + for (uint32_t i = 0; i < info.fVariantCount; i++) {
1.400 + if (info.fMimeTypeArray[i] != nullptr)
1.401 + PL_strfree(info.fMimeTypeArray[i]);
1.402 +
1.403 + if (info.fMimeDescriptionArray[i] != nullptr)
1.404 + PL_strfree(info.fMimeDescriptionArray[i]);
1.405 +
1.406 + if (info.fExtensionArray[i] != nullptr)
1.407 + PL_strfree(info.fExtensionArray[i]);
1.408 + }
1.409 +
1.410 + PR_FREEIF(info.fMimeTypeArray);
1.411 + PR_FREEIF(info.fMimeDescriptionArray);
1.412 + PR_FREEIF(info.fExtensionArray);
1.413 +
1.414 + if (info.fFullPath != nullptr)
1.415 + PL_strfree(info.fFullPath);
1.416 +
1.417 + if (info.fFileName != nullptr)
1.418 + PL_strfree(info.fFileName);
1.419 +
1.420 + if (info.fVersion != nullptr)
1.421 + PL_strfree(info.fVersion);
1.422 +
1.423 + return NS_OK;
1.424 +}
